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| | Science Timeline (Site not responding. Last check: 2007-10-29) |
 | | In 1926, de Broglie attempted to obviate the quantum mechanical conundrum 'wave or particle' by maintaining instead that it is 'wave and particle,' reasoning that "quantum phenomena do not exclude a uniform description of the micro and macro worlds..., system and apparatus" (Bell 1987:175). |
 | | In 1926, Gregor Wentzel, Kramers, and Leon Brillouin, each independently, invented the 'semiclassical, or WKB, approximation,' a technique in quantum mechanics, wherein "the wave function is written as an asymptomatic series with ascending powers of the Planck constant h, with the first term being purely classical" (Dictionary of Physics 2000:444). |
 | | In 1926, Donald Howard Menzel, in "The Planetary Nebulae," raised the possibility that the Balmer emission lines, lines in the hydrogen spectrum created when electrons drop back to a lower energy level, are "the result of photoionization by ultraviolet star light, followed by recombination of free electrons and protons" (Lang and Gingerich 1979:573). |
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